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  Experimental verification of intersatellite clock synchronization at LISA performance levels

Yamamoto, K., Vorndamme, C., Hartwig, O., Staab, M., Schwarze, T., & Heinzel, G. (2022). Experimental verification of intersatellite clock synchronization at LISA performance levels. Physical Review D, 105(4): 042009. doi:10.1103/PhysRevD.105.042009.

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 Creators:
Yamamoto, Kohei1, Author              
Vorndamme, Christoph1, Author              
Hartwig, Olaf1, Author              
Staab, Martin1, Author              
Schwarze, Thomas1, Author              
Heinzel, Gerhard1, Author              
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1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

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Free keywords: Astrophysics, Instrumentation and Methods for Astrophysics, astro-ph.IM, Physics, Instrumentation and Detectors, physics.ins-det, Physics, Optics, physics.optics
 Abstract: The Laser Interferometer Space Antenna (LISA) aims to observe gravitational waves in the mHz regime over its 10-year mission time. LISA will operate laser interferometers between three spacecrafts. Each spacecraft will utilize independent clocks which determine the sampling times of onboard phasemeters to extract the interferometric phases and, ultimately, gravitational wave signals. To suppress limiting laser frequency noise, signals sampled by each phasemeter need to be combined in post-processing to synthesize virtual equal-arm interferometers. The synthesis in turn requires a synchronization of the independent clocks. This article reports on the experimental verification of a clock synchronization scheme down to LISA performance levels using a hexagonal optical bench. The development of the scheme includes data processing that is expected to be applicable to the real LISA data with minor modifications. Additionally, some noise coupling mechanisms are discussed.

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 Dates: 2021-12-232022
 Publication Status: Published in print
 Pages: 9 pages, 4 figures
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 Rev. Type: -
 Identifiers: arXiv: 2112.12586
DOI: 10.1103/PhysRevD.105.042009
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Title: Physical Review D
Source Genre: Journal
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Pages: - Volume / Issue: 105 (4) Sequence Number: 042009 Start / End Page: - Identifier: -